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SubjectRe: [PATCH v3 15/17] x86/hyperv: implement an MSI domain for root partition
Hi Wei,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tip/x86/core]
[also build test WARNING on asm-generic/master iommu/next tip/timers/core pci/next linus/master v5.10-rc5]
[cannot apply to next-20201124]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Wei-Liu/Introducing-Linux-root-partition-support-for-Microsoft-Hypervisor/20201125-011026
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 238c91115cd05c71447ea071624a4c9fe661f970
config: x86_64-randconfig-a003-20201125 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 77e98eaee2e8d4b9b297b66fda5b1e51e2a69999)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://github.com/0day-ci/linux/commit/ae7533bcd9667c0f23b545d941d3c68460f91ea2
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Wei-Liu/Introducing-Linux-root-partition-support-for-Microsoft-Hypervisor/20201125-011026
git checkout ae7533bcd9667c0f23b545d941d3c68460f91ea2
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

arch/x86/hyperv/irqdomain.c:303:3: error: field designator 'domain_free_irqs' does not refer to any field in type 'struct msi_domain_ops'
.domain_free_irqs = hv_msi_domain_free_irqs,
^
>> arch/x86/hyperv/irqdomain.c:316:28: warning: no previous prototype for function 'hv_create_pci_msi_domain' [-Wmissing-prototypes]
struct irq_domain * __init hv_create_pci_msi_domain(void)
^
arch/x86/hyperv/irqdomain.c:316:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
struct irq_domain * __init hv_create_pci_msi_domain(void)
^
static
1 warning and 1 error generated.

vim +/hv_create_pci_msi_domain +316 arch/x86/hyperv/irqdomain.c

301
302 static struct msi_domain_ops pci_msi_domain_ops = {
> 303 .domain_free_irqs = hv_msi_domain_free_irqs,
304 .msi_prepare = pci_msi_prepare,
305 };
306
307 static struct msi_domain_info hv_pci_msi_domain_info = {
308 .flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
309 MSI_FLAG_PCI_MSIX,
310 .ops = &pci_msi_domain_ops,
311 .chip = &hv_pci_msi_controller,
312 .handler = handle_edge_irq,
313 .handler_name = "edge",
314 };
315
> 316 struct irq_domain * __init hv_create_pci_msi_domain(void)
317 {
318 struct irq_domain *d = NULL;
319 struct fwnode_handle *fn;
320
321 fn = irq_domain_alloc_named_fwnode("HV-PCI-MSI");
322 if (fn)
323 d = pci_msi_create_irq_domain(fn, &hv_pci_msi_domain_info, x86_vector_domain);
324
325 /* No point in going further if we can't get an irq domain */
326 BUG_ON(!d);
327
328 return d;
329 }
330

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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